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WO2020007947A3 - Imaging tissue anisotropy - Google Patents

Imaging tissue anisotropy Download PDF

Info

Publication number
WO2020007947A3
WO2020007947A3 PCT/EP2019/067914 EP2019067914W WO2020007947A3 WO 2020007947 A3 WO2020007947 A3 WO 2020007947A3 EP 2019067914 W EP2019067914 W EP 2019067914W WO 2020007947 A3 WO2020007947 A3 WO 2020007947A3
Authority
WO
WIPO (PCT)
Prior art keywords
tissue conductance
measuring
isotropy
conductance
tissue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2019/067914
Other languages
French (fr)
Other versions
WO2020007947A2 (en
Inventor
Shlomo Ben-Haim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to EP19737503.3A priority Critical patent/EP3817656A2/en
Priority to US17/257,655 priority patent/US20210121093A1/en
Priority to JP2020573254A priority patent/JP7401474B2/en
Priority to CN201980057721.7A priority patent/CN112654289A/en
Publication of WO2020007947A2 publication Critical patent/WO2020007947A2/en
Publication of WO2020007947A3 publication Critical patent/WO2020007947A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0536—Impedance imaging, e.g. by tomography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0538—Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/283—Invasive
    • A61B5/287—Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
    • A61B5/6869—Heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
    • A61B5/6876—Blood vessel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0033—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room
    • A61B5/004—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part
    • A61B5/0044—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part for the heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/339—Displays specially adapted therefor

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Physiology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

A method for measuring tissue conductance isotropy including measuring tissue conductance in a first direction, measuring tissue conductance in a second direction, and calculating tissue conductance isotropy based on the tissue conductance in the first direction and the tissue conductance in the second direction, wherein the second direction is not parallel to the first direction. A system for measuring tissue conductance isotropy including a catheter including a current source electrode, a plurality of induced voltage measuring electrodes, a signal processing unit for calculating tissue conductance isotropy based on tissue conductance measured in a first direction and tissue conductance measured in a second direction. Related apparatus, methods and computer program product are also described.
PCT/EP2019/067914 2018-07-04 2019-07-03 Imaging tissue anisotropy Ceased WO2020007947A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19737503.3A EP3817656A2 (en) 2018-07-04 2019-07-03 Imaging tissue anisotropy
US17/257,655 US20210121093A1 (en) 2018-07-04 2019-07-03 Imaging tissue anisotropy
JP2020573254A JP7401474B2 (en) 2018-07-04 2019-07-03 System for measuring tissue conductance isotropy
CN201980057721.7A CN112654289A (en) 2018-07-04 2019-07-03 Imaging of tissue anisotropy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862693935P 2018-07-04 2018-07-04
US62/693,935 2018-07-04

Publications (2)

Publication Number Publication Date
WO2020007947A2 WO2020007947A2 (en) 2020-01-09
WO2020007947A3 true WO2020007947A3 (en) 2020-02-20

Family

ID=69061002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/067914 Ceased WO2020007947A2 (en) 2018-07-04 2019-07-03 Imaging tissue anisotropy

Country Status (5)

Country Link
US (1) US20210121093A1 (en)
EP (1) EP3817656A2 (en)
JP (1) JP7401474B2 (en)
CN (1) CN112654289A (en)
WO (1) WO2020007947A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080058657A1 (en) * 2006-09-06 2008-03-06 Yitzhack Schwartz Correlation of cardiac electrical maps with body surface measurements

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1615551B1 (en) * 2003-04-15 2016-06-08 Philips Intellectual Property & Standards GmbH Device and method for examination and use of an electrical field in an object under examination containing magnetic particles
CA2636066C (en) 2006-01-25 2012-11-13 Dtherapeutics, Llc Devices, systems and methods for determining sizes of vessels
US8249707B2 (en) * 2008-05-14 2012-08-21 Pacesetter, Inc. Methods and systems for improved arrhythmia discrimination
EP2158838A1 (en) * 2008-08-29 2010-03-03 Gerinova AG Non-invasive method for estimating of the variation of the clucose level in the blood of a person and apparatur for carrying out the method
WO2011085210A1 (en) 2010-01-07 2011-07-14 Dtherapeutics, Llc Single injection systems and methods to obtain parallel tissue conductances within luminal organs
WO2016166067A1 (en) * 2015-04-17 2016-10-20 Koninklijke Philips N.V. Detection of anisotropic biological tissue
US20170027465A1 (en) * 2015-07-31 2017-02-02 University Of Utah Research Foundation Systems and methods for characterizing the conductive properties of the heart
CN105342613A (en) * 2015-12-02 2016-02-24 中国科学院半导体研究所 Flexible electrode for measuring muscle impedance and preparation method thereof
CN112334064A (en) * 2018-05-06 2021-02-05 纳维斯国际有限公司 Measure electrical impedance, contact force and tissue properties

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080058657A1 (en) * 2006-09-06 2008-03-06 Yitzhack Schwartz Correlation of cardiac electrical maps with body surface measurements

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YANQUN WANG ET AL: "An Investigation of the Importance of Myocardial Anisotropy in Finite-Element Modeling of the Heart: Methodology and Application to the Estimation of Defibrillation Efficacy", IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, IEEE SERVICE CENTER, PISCATAWAY, NJ, USA, vol. 48, no. 12, 1 December 2001 (2001-12-01), XP011007185, ISSN: 0018-9294 *

Also Published As

Publication number Publication date
US20210121093A1 (en) 2021-04-29
CN112654289A (en) 2021-04-13
WO2020007947A2 (en) 2020-01-09
JP2021529606A (en) 2021-11-04
JP7401474B2 (en) 2023-12-19
EP3817656A2 (en) 2021-05-12

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